.statistics-card {
        background: white;
        color: #333;
        border: 1px solid #e9ecef;
        border-radius: 8px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
    }

    .statistics-card:hover {
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
        transform: translateY(-2px);
    }

    .statistics-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(90deg, #007bff, #0056b3);
    }

    .statistics-card:nth-child(2)::before {
        background: linear-gradient(90deg, #28a745, #1e7e34);
    }

    .statistics-card:nth-child(3)::before {
        background: linear-gradient(90deg, #dc3545, #c82333);
    }

    .statistics-card:nth-child(4)::before {
        background: linear-gradient(90deg, #ffc107, #e0a800);
    }

    .statistics-card:nth-child(5)::before {
        background: linear-gradient(90deg, #17a2b8, #138496);
    }

    .statistics-card:nth-child(6)::before {
        background: linear-gradient(90deg, #6f42c1, #5a2d91);
    }

    .statistics-card .card-body {
        padding: 1.25rem;
    }

    .statistics-number {
        font-size: 1.25rem;
        font-weight: 700;
        margin-bottom: 0.25rem;
        color: #2c3e50;
        line-height: 1.2;
        word-break: break-all;
    }

    .statistics-label {
        font-size: 0.75rem;
        color: #6c757d;
        font-weight: 500;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }

    .charts-container {
        background: white;
        border: 1px solid #e9ecef;
        border-radius: 8px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        padding: 1.25rem;
        margin-bottom: 1.5rem;
        max-height: 800px;
        overflow-y: auto;
    }

    .chart-container {
        background: #f8f9fa;
        border: 1px solid #e9ecef;
        border-radius: 6px;
        padding: 1rem;
        margin-bottom: 1rem;
        min-height: 300px;
        max-height: 350px;
    }

    .chart-container:last-child {
        margin-bottom: 0;
        max-height: 400px;
        overflow: hidden;
    }

    .chart-container:last-child .table-responsive {
        max-height: 300px;
        overflow-y: auto;
    }

    .chart-container canvas {
        max-height: 250px !important;
    }

    .chart-container h5 {
        color: #2c3e50;
        font-weight: 600;
        font-size: 1rem;
        margin-bottom: 0.75rem;
        padding-bottom: 0.5rem;
        border-bottom: 1px solid #dee2e6;
    }

    .filter-section {
        background: white;
        border: 1px solid #e9ecef;
        border-radius: 8px;
        box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        padding: 1.25rem;
        margin-bottom: 1.5rem;
    }

    .filter-section .form-label {
        font-weight: 600;
        font-size: 0.9rem;
        color: #2c3e50;
        margin-bottom: 0.5rem;
    }

    .dimension-btn {
        border-radius: 6px;
        padding: 0.5rem 1rem;
        margin-right: 0.5rem;
        transition: all 0.2s ease;
        font-weight: 500;
        border: 1px solid #dee2e6;
        background: white;
        color: #6c757d;
    }

    .dimension-btn:hover {
        background: #f8f9fa;
        border-color: #adb5bd;
        color: #495057;
    }

    .dimension-btn.active {
        background: #007bff;
        color: white;
        border-color: #007bff;
        box-shadow: 0 2px 4px rgba(0, 123, 255, 0.2);
    }

    .summary-grid {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }

    .summary-grid .card {
        flex: 1;
        min-width: 160px;
        max-width: calc(16.666% - 0.83rem);
    }

    .summary-grid .card .card-body {
        padding: 1rem 0.75rem;
    }

    @media (max-width: 1200px) {
        .summary-grid .card {
            max-width: calc(33.333% - 0.67rem);
            min-width: 140px;
        }
    }

    @media (max-width: 768px) {
        .summary-grid .card {
            max-width: calc(50% - 0.5rem);
            min-width: 120px;
        }

        .statistics-number {
            font-size: 1.1rem;
        }

        .statistics-label {
            font-size: 0.7rem;
        }
    }

    @media (max-width: 576px) {
        .summary-grid .card {
            max-width: 100%;
            min-width: auto;
        }

        .statistics-number {
            font-size: 1rem;
        }

        .statistics-label {
            font-size: 0.65rem;
        }
    }

    .loading-overlay {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(255,255,255,0.8);
        display: flex;
        align-items: center;
        justify-content: center;
        z-index: 1000;
        border-radius: 15px;
    }

    .spinner-border-sm {
        width: 1.5rem;
        height: 1.5rem;
    }

    /* 自定义滚动条样式 */
    .charts-container::-webkit-scrollbar {
        width: 8px;
    }

    .charts-container::-webkit-scrollbar-track {
        background: #f1f1f1;
        border-radius: 4px;
    }

    .charts-container::-webkit-scrollbar-thumb {
        background: #c1c1c1;
        border-radius: 4px;
    }

    .charts-container::-webkit-scrollbar-thumb:hover {
        background: #a8a8a8;
    }

    /* Firefox 滚动条样式 */
    .charts-container {
        scrollbar-width: thin;
        scrollbar-color: #c1c1c1 #f1f1f1;
    }

    /* 表格滚动条样式 */
    .chart-container:last-child .table-responsive::-webkit-scrollbar {
        width: 6px;
        height: 6px;
    }

    .chart-container:last-child .table-responsive::-webkit-scrollbar-track {
        background: #f1f1f1;
        border-radius: 3px;
    }

    .chart-container:last-child .table-responsive::-webkit-scrollbar-thumb {
        background: #c1c1c1;
        border-radius: 3px;
    }

    .chart-container:last-child .table-responsive::-webkit-scrollbar-thumb:hover {
        background: #a8a8a8;
    }

    .chart-container:last-child .table-responsive {
        scrollbar-width: thin;
        scrollbar-color: #c1c1c1 #f1f1f1;
    }

    /* 表格头部固定样式 */
    .chart-container:last-child .table-responsive .sticky-top {
        position: sticky;
        top: 0;
        z-index: 10;
    }

    .chart-container:last-child .table-responsive table {
        margin-bottom: 0;
    }

    .chart-container:last-child .table-responsive th,
    .chart-container:last-child .table-responsive td {
        white-space: nowrap;
        padding: 0.5rem 0.75rem;
    }

    /* 提示信息样式 */
    .alert-sm {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
        border-radius: 6px;
    }

         .alert-info {
         background-color: #e7f3ff;
         border-color: #b3d9ff;
         color: #0c5460;
     }

     /* 雷达图样式 */
     .chart-container h5 .btn {
         font-size: 0.75rem;
         padding: 0.25rem 0.5rem;
         margin-top: -0.25rem;
     }

           .chart-container h5 .btn:hover {
          transform: scale(1.05);
      }

      /* 地区选择器样式 */
      .chart-container .form-select-sm {
          font-size: 0.75rem;
          padding: 0.25rem 0.5rem;
          border-radius: 4px;
          border: 1px solid #dee2e6;
          background-color: white;
          height: auto;
      }

      .chart-container .form-select-sm:focus {
          border-color: #007bff;
          box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
      }

      /* 图表标题区域样式 */
      .chart-container .d-flex.justify-content-between {
          border-bottom: 1px solid #dee2e6;
          padding-bottom: 0.75rem;
      }

      .chart-container .d-flex.justify-content-between h5 {
          border-bottom: none;
          padding-bottom: 0;
          margin-bottom: 0;
      }

    /* 饼图容器样式 */
    .chart-container .row {
        margin: 0;
    }

    .chart-container .col-md-6 {
        padding: 0 0.5rem;
    }

    .chart-container .col-md-6 .chart-container {
        min-height: 350px;
        max-height: 400px;
        margin-bottom: 1rem;
    }

    .chart-container .col-md-6 .chart-container canvas {
        max-height: 280px !important;
    }

    /* 饼图图例样式 */
    .chart-container .col-md-6 .chart-container .chartjs-legend {
        margin-top: 1rem;
    }

    /* 饼图标题样式 */
    .chart-container .col-md-6 .chart-container h5 {
        font-size: 0.95rem;
        margin-bottom: 0.5rem;
    }

    .chart-container .col-md-6 .chart-container h5 small {
        font-size: 0.75rem;
    }

    /* 饼图按钮样式 */
    .chart-container .col-md-6 .chart-container .btn {
        font-size: 0.7rem;
        padding: 0.2rem 0.4rem;
    }

    /* 响应式饼图布局 */
    @media (max-width: 768px) {
        .chart-container .col-md-6 {
            padding: 0;
            margin-bottom: 1rem;
        }

        .chart-container .col-md-6 .chart-container {
            min-height: 300px;
            max-height: 350px;
        }

        .chart-container .col-md-6 .chart-container canvas {
            max-height: 220px !important;
        }
    }

    /* ===== Select2 选项视觉强化（仅子选项标识） ===== */
    /* 每一项加清晰边框与圆角间距，便于区分 */
    .select2-container--bootstrap-5 .select2-results__option {
        border: 1px solid #dee2e6;
        margin: 4px 8px;
        border-radius: 6px;
        padding: 0.4rem 0.5rem;
        transition: all .15s ease-in-out;
        background-color: #fff;
    }
    /* 悬浮高亮：强化边框并淡蓝底色 */
    .select2-container--bootstrap-5 .select2-results__option--highlighted.select2-results__option--selectable {
        background-color: #e7f1ff !important;
        color: #0d6efd !important;
        border-color: #86b7fe !important;
        box-shadow: inset 0 0 0 1px rgba(13,110,253,.25);
    }
    /* 选中项：更深色边框与背景区分 */
    .select2-container--bootstrap-5 .select2-results__option[aria-selected=true] {
        background-color: #dfefff !important;
        color: #0b5ed7 !important;
        border-color: #0b5ed7 !important;
    }
    /* 下拉选项区域添加滚动条，避免大量选项撑高页面 */
    .select2-container .select2-results > .select2-results__options {
        max-height: 280px !important;
        overflow-y: auto !important;
    }
    /* 可选：滚动条样式 */
    .select2-container .select2-results > .select2-results__options::-webkit-scrollbar {
        width: 8px;
        height: 8px;
    }
    .select2-container .select2-results > .select2-results__options::-webkit-scrollbar-thumb {
        background: #c4c9cf;
        border-radius: 4px;
    }
    .select2-container .select2-results > .select2-results__options::-webkit-scrollbar-track {
        background: #f1f3f5;
    }